Clamshell package



FIG. 1 is a perspective view of a clamshell package showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a side elevation view thereof;

FIG. 5 is an opposite side elevation view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines shown in FIGS. 1-3 represent unclaimed subject matter and form no part of the claimed design. 

CLAIM The ornamental design for a clamshell package, as shown and described. 